Analyzing gangbuster frequency selective surface using improved spectral domain method

In this paper, an improved spectral domain method is given. Although the spatial domain element current and unit current are quite different, their spectral domain current are identical. The improved spectral domain method is developed based on the concept of array element. It is very convenient to analyze gangbuster frequency selective surface for element current is continuous in spatial domain. This method has been successfully used in analyzing experiment. A comparison of numerical results with mentioned previously data is given, perfect agreement is observed.